Foundation pit supporting steel beam variable cross-section conversion device

Abstract

The utility model discloses a variable cross-section conversion device for a foundation pit supporting steel beam, which relates to the technical field of complex deep foundation pit construction and comprises a first steel support and a second steel support, and the top end of the second steel support is in threaded connection with a threaded plug. The first steel support and the second steel support are fixedly connected through a steel support conversion mechanism and an adjustable built-in mechanism, the steel support conversion mechanism comprises a steel support conversion head, a circular ring flange is fixedly welded to the tail end of the steel support conversion head, and four first steel sheets are fixedly welded to the side face of the steel support conversion head; a first bolt hole is formed in the surface of the first steel sheet; according to the utility model, the steel support conversion mechanism and the adjustable built-in mechanism enable the whole device to be high in supporting strength, convenient to adjust, mount and dismount, and high in practicability.

Description

Technical Field

[0001] The utility model relates to the technical field of complex deep foundation pit construction, in particular to a variable-section conversion device for foundation pit supporting steel beams. Background Art

[0002] Foundation pit support is a measure of support, reinforcement and protection for the side walls of the foundation pit and the surrounding environment to ensure the safety of underground structure construction and the surrounding environment of the foundation pit. During the construction of deep foundation pits, the huge water and soil pressure around the foundation pit is difficult to be borne by the retaining structure alone. In order to control the deformation of the foundation pit, it is generally necessary to erect support beams inside the foundation pit. At present, the length, size and specifications of deep foundation pit supports vary. The processing effect of some support positions with variable cross-sections is poor, the installation and disassembly process is cumbersome, the application of axial force is difficult and the accuracy is not high, and the axial force monitoring process is not timely. After the construction is completed, the removal process of the clamp is unsafe.

[0003] Based on this, a variable-section conversion device for foundation pit support steel beams is now provided, which can eliminate the drawbacks of existing devices. Utility Model Content

[0004] The utility model aims to provide a variable cross-section conversion device for foundation pit supporting steel beams, so as to solve the problem of unsafe disassembly process of clamps.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A variable-section conversion device for foundation pit supporting steel beams comprises a first steel support and a second steel support, wherein the top end of the second steel support is threadedly connected with a threaded plug, and the first steel support and the second steel support are fixedly connected via a steel support conversion mechanism and an adjustable built-in mechanism.

[0007] On the basis of the above technical solutions, the present invention also provides the following optional technical solutions:

[0008] In an optional solution: the steel support conversion mechanism includes a steel support conversion head, a circular flange is fixedly welded to the end of the steel support conversion head, four first steel sheets are fixedly welded to the side of the steel support conversion head, and first bolt holes are opened on the surface of the first steel sheet.

[0009] In an optional solution: the annular flange is fixedly connected to the first steel support via a first bolt.

[0010] In an optional solution: the steel support conversion head is a hollow table-shaped body with a small upper end and a large lower end.

[0011] In an optional scheme: the adjustable built-in mechanism includes an adjustable steel support built-in flexible joint, four second steel sheets are fixedly welded on the side of the adjustable steel support built-in flexible joint, second bolt holes are opened on the surface of the second steel sheet, the end of the adjustable steel support built-in flexible joint has grooves on four sides, and the end of the adjustable steel support built-in flexible joint is sealed by a threaded plug.

[0012] In an optional solution: the adjustable steel support built-in movable joint and the steel support conversion head are fixedly connected by a second bolt.

[0013] In an optional solution: the built-in movable joint of the adjustable steel support is made of steel.

[0014] In an optional solution, the second bolt hole is adapted to the first bolt hole in size.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0016] The utility model provides a steel support conversion mechanism and an adjustable built-in mechanism. The first steel sheet on the side of the steel support conversion head makes it easy to install and disassemble the steel support conversion head with the adjustable steel support built-in flexible joint. At the same time, the annular flange at the end of the steel support conversion head provides a fulcrum for the first steel support connection. The four sides of the steel support end are grooved to provide space for the movement of the adjustable steel support built-in flexible joint, thereby achieving the effect of high support strength and easy installation and disassembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the utility model.

[0018] Figure 2 It is a structural schematic diagram of the steel support conversion head of the utility model.

[0019] Figure 3 It is a structural schematic diagram of the utility model of an adjustable steel support with a built-in movable joint.

[0020] Figure 4 This is an enlarged structural diagram of the steel support conversion head of the utility model.

[0021] Figure 5 This is an enlarged structural diagram of the utility model's adjustable steel support with built-in movable joint.

[0022] Figure 6 This is a schematic diagram of the built-in movable joint connection of the adjustable steel support of the utility model.

[0023] Figure 7 It is a schematic diagram of the plugging of the utility model.

[0024] Notes on figure numbers: 101, first steel support; 102, second steel support; 103, threaded plug; 200, steel support conversion mechanism; 201, steel support conversion head; 202, annular flange; 203, first steel sheet; 204, first bolt hole; 205, first bolt; 300, adjustable built-in mechanism; 301, adjustable steel support built-in flexible joint; 302, second steel sheet; 303, second bolt hole; 304, second bolt; 305, slot. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments.

[0026] Example 1

[0027] In one embodiment, Figure 1-Figure 7 As shown, a variable-section conversion device for foundation pit supporting steel beams comprises a first steel support 101 and a second steel support 102, the top end of the second steel support 102 is threadedly connected with a threaded plug 103, the first steel support 101 and the second steel support 102 are fixedly connected via a steel support conversion mechanism 200 and an adjustable built-in mechanism 300, the steel support conversion mechanism 200 and the adjustable built-in mechanism 300 make the overall support strength of the device high while being easy to adjust and install and disassemble.

[0028] In one embodiment, Figure 2 and Figure 4 As shown, the steel support conversion mechanism 200 includes a steel support conversion head 201, a circular ring flange 202 is fixedly welded at the end of the steel support conversion head 201, and the circular ring flange 202 is fixedly connected to the first steel support 101 through a first bolt 205. The circular ring flange 202 provides a fulcrum for the connection with the first steel support 101, so that the connection between the two is more stable. Four first steel sheets 203 are fixedly welded on the side of the steel support conversion head 201, and the surface of the first steel sheet 203 is provided with a first bolt hole 204. The first steel sheet 203 and the first bolt hole 204 make it easy to install and disassemble the steel support conversion head 201 with the adjustable built-in mechanism 300.

[0029] In one embodiment, Figure 4 As shown, the steel support conversion head 201 is a hollow table-shaped body with a small upper end and a large lower end.

[0030] In one embodiment, Figure 3-Figure 7As shown, the adjustable built-in mechanism 300 includes an adjustable steel support built-in joint 301, four second steel sheets 302 are fixedly welded on the side of the adjustable steel support built-in joint 301, second bolt holes 303 are provided on the surface of the second steel sheet 302, and slots 305 are provided on the four sides of the end of the adjustable steel support built-in joint 301. The end of the adjustable steel support built-in joint 301 is blocked by a threaded plug 103, and the four-side slots 305 provide space for the adjustable steel support built-in joint 301 to move, thereby ensuring that the steel support as a whole can be fine-tuned, and finally sealed by the end threaded plug 103.

[0031] Example 2

[0032] In one embodiment, Figure 2 As shown, the adjustable steel support built-in flexible joint 301 and the steel support conversion head 201 are fixedly connected by a second bolt 304, which increases the strength of both and facilitates installation and disassembly.

[0033] In one embodiment, Figure 5 As shown, the adjustable steel support built-in flexible joint 301 is made of steel, so that the overall support strength of the device is high.

[0034] In one embodiment, Figure 2 As shown, the size of the second bolt hole 303 matches that of the first bolt hole 204 .

[0035] The above embodiment discloses a variable-section conversion device for foundation pit support steel beams, wherein the annular flange 202 is fixedly connected to the first steel support 101 by a first bolt 205, and the annular flange 202 provides a fulcrum for the connection with the first steel support 101, making the connection between the two more stable, and the first steel sheet 203 and the first bolt hole 204 make it easy to install and disassemble the steel support conversion head 201 with the adjustable steel support built-in joint 301, and the four-side slots 305 at the end of the adjustable steel support built-in joint 301 provide space for the movement of the adjustable steel support built-in joint 301, ensuring that the steel support as a whole can be fine-tuned, and finally sealed by the end threaded plug 103.

[0036] The above is only a specific embodiment of the present disclosure, but the protection scope of the present disclosure is not limited thereto. Any person skilled in the art who is familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present disclosure, which should be included in the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure should be based on the protection scope of the claims.

Claims

1. A variable cross-section conversion device for foundation pit support steel beams, comprising a first steel support (101) and a second steel support (102), wherein the top end of the second steel support (102) is threadedly connected to a threaded plug (103), It is characterized in that The first steel support (101) and the second steel support (102) are fixedly connected via a steel support conversion mechanism (200) and an adjustable built-in mechanism (300).

2. A variable cross-section conversion device for foundation pit support steel beams according to claim 1, It is characterized in that The steel support conversion mechanism (200) comprises a steel support conversion head (201), a circular flange (202) is fixedly welded to the end of the steel support conversion head (201), four first steel sheets (203) are fixedly welded to the side of the steel support conversion head (201), and first bolt holes (204) are provided on the surface of the first steel sheets (203).

3. A variable cross-section conversion device for foundation pit support steel beams according to claim 2, It is characterized in that The annular flange (202) is fixedly connected to the first steel support (101) via a first bolt (205).

4. A variable cross-section conversion device for foundation pit support steel beams according to claim 2, It is characterized in that The steel support conversion head (201) is in the shape of a hollow platform with a small upper end and a large lower end.

5. The variable cross-section conversion device for foundation pit support steel beam according to claim 1, It is characterized in that The adjustable built-in mechanism (300) comprises an adjustable steel support built-in flexible joint (301), four second steel sheets (302) are fixedly welded to the side of the adjustable steel support built-in flexible joint (301), second bolt holes (303) are provided on the surface of the second steel sheet (302), the end of the adjustable steel support built-in flexible joint (301) has grooves (305) on four sides, and the end of the adjustable steel support built-in flexible joint (301) is sealed by a threaded plug (103).

6. A variable cross-section conversion device for foundation pit support steel beams according to claim 5, It is characterized in that The adjustable steel support built-in movable joint (301) and the steel support conversion head (201) are fixedly connected via a second bolt (304).

7. The variable cross-section conversion device for foundation pit support steel beam according to claim 5, It is characterized in that The adjustable steel support built-in movable joint (301) is made of steel.

8. The variable cross-section conversion device for foundation pit support steel beam according to claim 5, It is characterized in that The size of the second bolt hole (303) matches that of the first bolt hole (204).

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